Kentaro Sakai is a champion breeder of nishikigoi carp aka koi fish. Just last year, one sold at an auction for an astounding amount of money— nearly $2 million USD. Sakai’s carp are prized by wealthy collectors for their vivid colors, distinct patterns and glossy skin. Sakai invites us to his fish farm in Hiroshima, Japan, to see how he raises these fish, who lead pretty pampered lives in his care.
This article is about size change in fish do to global warming, but has an excellent description of why larger Koi require more O2 than smaller Koi.
While this study focuses on salt-water fish, there are implications for all fish keeping.
Scientists have recently discovered that a structure in a fish's inner ear records their metabolic rate.
Read this synopsis of a study that showed the benefits of Koi getting some sun near the surface.
How do fish extract oxygen from the water? With gills. Read this quick article on how gills work as well as other systems used by underwater creatures to get O2.
More information on how fish school - apparently at 2 different speeds, using 2 different processes. Short synopsis below.
This is not a research paper, but a synopsis of a recent (Jan 28 2019) work done by New York University on how fish school.
This is a great little article about Koi, and how one breeder got $1.8 Million for a Grand Champion! Starts with basics, but the info about color cells and cell depth is fascinating.
Have you ever wondered about fish blood and it's components? The following 2 studies are about platelets (thrombocytes). Platelets not only facilitate blood clotting, but also provide an important protective barrier, and can be used to determine the age of the Koi.
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